278 lines
7.1 KiB
C
278 lines
7.1 KiB
C
|
/*
|
||
|
|
* @doc INTERNAL
|
||
|
|
*
|
||
|
|
* @module _ANTIEVT.H |
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* Purpose:
|
||
|
|
* Class declarations for common anti-event objects
|
||
|
|
*
|
||
|
|
* Author:
|
||
|
|
* alexgo 3/25/95
|
||
|
|
*
|
||
|
|
* Copyright (c) 1995-2000, Microsoft Corporation. All rights reserved.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __ANTIEVT_H__
|
||
|
|
#define __ANTIEVT_H__
|
||
|
|
|
||
|
|
#include "_frunptr.h"
|
||
|
|
|
||
|
|
class CTxtEdit;
|
||
|
|
class CAntiEventDispenser;
|
||
|
|
class COleObject;
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CBaseAE
|
||
|
|
*
|
||
|
|
* @class
|
||
|
|
* Base anti-event that manages a linked list of anti-events
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
class CBaseAE : public IAntiEvent
|
||
|
|
{
|
||
|
|
//@access Public Methods
|
||
|
|
public:
|
||
|
|
virtual void Destroy(); //@cmember Destroy
|
||
|
|
//@cmember Undo
|
||
|
|
virtual HRESULT Undo( CTxtEdit *ped, IUndoBuilder *publdr );
|
||
|
|
virtual HRESULT MergeData( DWORD dwDataType, void *pdata); //@cmember
|
||
|
|
// Merges undo data into the
|
||
|
|
// current context.
|
||
|
|
virtual void OnCommit( CTxtEdit *ped ); //@cmember Called when AE is
|
||
|
|
// committed to undo stack
|
||
|
|
virtual void SetNext( IAntiEvent *pNext ); //@cmember Sets next AE
|
||
|
|
virtual IAntiEvent *GetNext(); //@cmember Gets next AE
|
||
|
|
|
||
|
|
//@access Protected Methods
|
||
|
|
protected:
|
||
|
|
// CBaseAE should only exist as a parent class
|
||
|
|
CBaseAE(); //@cmember Constructor
|
||
|
|
~CBaseAE(){;}
|
||
|
|
|
||
|
|
//@access Private Methods and Data
|
||
|
|
private:
|
||
|
|
IAntiEvent * _pnext; //@cmember Pointer to the next
|
||
|
|
//AntiEvent
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CReplaceRangeAE
|
||
|
|
*
|
||
|
|
* @class
|
||
|
|
* an anti-event object than undoes a CTxtPtr::ReplaceRange
|
||
|
|
* operation
|
||
|
|
*
|
||
|
|
* @base public | CBaseAE
|
||
|
|
*/
|
||
|
|
class CReplaceRangeAE: public CBaseAE
|
||
|
|
{
|
||
|
|
//@access Public Methods
|
||
|
|
public:
|
||
|
|
// IAntiEvent methods
|
||
|
|
virtual void Destroy(); //@cmember Destroy
|
||
|
|
//@cmember Undo
|
||
|
|
virtual HRESULT Undo( CTxtEdit *ped, IUndoBuilder *publdr);
|
||
|
|
virtual HRESULT MergeData( DWORD dwDataType, void *pdata); //@cmember
|
||
|
|
// Merges undo data into the
|
||
|
|
// current context
|
||
|
|
|
||
|
|
//@access Private methods and data
|
||
|
|
private:
|
||
|
|
//@cmember Constructor
|
||
|
|
CReplaceRangeAE(LONG cpMin, LONG cpMax, LONG cchDel, TCHAR *pchDel,
|
||
|
|
IAntiEvent *paeCF, IAntiEvent *paePF);
|
||
|
|
~CReplaceRangeAE(); //@cmember Destructor
|
||
|
|
|
||
|
|
LONG _cpMin; //@cmember cp delete start
|
||
|
|
LONG _cpMax; //@cmember cp delete end
|
||
|
|
LONG _cchDel; //@cmember #of chars to insert
|
||
|
|
TCHAR * _pchDel; //@cmember chars to insert
|
||
|
|
IAntiEvent *_paeCF; //@cmember charformat AE
|
||
|
|
IAntiEvent *_paePF; //@cmember par format AE
|
||
|
|
|
||
|
|
friend class CAntiEventDispenser;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CReplaceFormattingAE
|
||
|
|
*
|
||
|
|
* @class
|
||
|
|
* an anti-event object than undoes replacing multiple char formats
|
||
|
|
*
|
||
|
|
* @base public | CBaseAE
|
||
|
|
*/
|
||
|
|
class CReplaceFormattingAE: public CBaseAE
|
||
|
|
{
|
||
|
|
//@access Public methods
|
||
|
|
public:
|
||
|
|
//
|
||
|
|
// IAntiEvent methods
|
||
|
|
//
|
||
|
|
virtual void Destroy(); //@cmember Destroy
|
||
|
|
//@cmember Undo
|
||
|
|
virtual HRESULT Undo(CTxtEdit *ped, IUndoBuilder *publdr);
|
||
|
|
|
||
|
|
//@access Private Methods and Data
|
||
|
|
private:
|
||
|
|
//@cmember Constructor
|
||
|
|
CReplaceFormattingAE(CTxtEdit* ped, LONG cp, CFormatRunPtr &rp, LONG cch,
|
||
|
|
IFormatCache *pf, BOOL fPara);
|
||
|
|
|
||
|
|
~CReplaceFormattingAE(); //@cmember Destuctor
|
||
|
|
|
||
|
|
LONG _cp; //@cmember cp at formatting start
|
||
|
|
LONG _cRuns; //@cmember # of format runs
|
||
|
|
CFormatRun *_prgRuns; //@cmember format runs
|
||
|
|
BOOL _fPara; //@cmember TRUE if para format
|
||
|
|
|
||
|
|
friend class CAntiEventDispenser;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CReplaceObjectAE
|
||
|
|
*
|
||
|
|
* @class
|
||
|
|
* an anti-event object that undoes the deletion of an object
|
||
|
|
*
|
||
|
|
* @base public | CBaseAE
|
||
|
|
*/
|
||
|
|
class CReplaceObjectAE : public CBaseAE
|
||
|
|
{
|
||
|
|
//@access Public methods
|
||
|
|
public:
|
||
|
|
//
|
||
|
|
// IAntiEvent methods
|
||
|
|
//
|
||
|
|
virtual void Destroy(void); //@cmember Destroy
|
||
|
|
//@cmember Undo
|
||
|
|
virtual HRESULT Undo(CTxtEdit *ped, IUndoBuilder *publdr);
|
||
|
|
virtual void OnCommit(CTxtEdit *ped); //@cmember called when
|
||
|
|
// committed
|
||
|
|
private:
|
||
|
|
CReplaceObjectAE(COleObject *pobj); //@cmember Constructor
|
||
|
|
~CReplaceObjectAE(); //@cmember Destructor
|
||
|
|
|
||
|
|
COleObject * _pobj; //@cmember pointer to the
|
||
|
|
// deleted object
|
||
|
|
BOOL _fUndoInvoked; //@cmember undo was invoked
|
||
|
|
// on this object.
|
||
|
|
|
||
|
|
friend class CAntiEventDispenser;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CResizeObjectAE
|
||
|
|
*
|
||
|
|
* @class
|
||
|
|
* an anti-event object that undoes the resizing of an object
|
||
|
|
*
|
||
|
|
* @base public | CBaseAE
|
||
|
|
*/
|
||
|
|
class CResizeObjectAE : public CBaseAE
|
||
|
|
{
|
||
|
|
//@access Public methods
|
||
|
|
public:
|
||
|
|
//
|
||
|
|
// IAntiEvent methods
|
||
|
|
//
|
||
|
|
virtual void Destroy(void); //@cmember Destroy
|
||
|
|
//@cmember Undo
|
||
|
|
virtual HRESULT Undo(CTxtEdit *ped, IUndoBuilder *publdr);
|
||
|
|
virtual void OnCommit(CTxtEdit *ped); //@cmember called when
|
||
|
|
// committed
|
||
|
|
private:
|
||
|
|
CResizeObjectAE(COleObject *pobj, SIZEUV size); //@cmember Constructor
|
||
|
|
~CResizeObjectAE(); //@cmember Destructor
|
||
|
|
|
||
|
|
COleObject * _pobj; //@cmember pointer to the
|
||
|
|
// deleted object
|
||
|
|
SIZEUV _size; //@cmember The old size
|
||
|
|
BOOL _fUndoInvoked; //@cmember undo was invoked
|
||
|
|
// on this object.
|
||
|
|
|
||
|
|
friend class CAntiEventDispenser;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CSelectionAE
|
||
|
|
*
|
||
|
|
* @class
|
||
|
|
* an anti-event object to restore a selection
|
||
|
|
*
|
||
|
|
* @base public | CBaseAE
|
||
|
|
*/
|
||
|
|
class CSelectionAE : public CBaseAE
|
||
|
|
{
|
||
|
|
//@access Public methods
|
||
|
|
public:
|
||
|
|
//
|
||
|
|
// IAntiEvent methods
|
||
|
|
//
|
||
|
|
virtual void Destroy(void); //@cmember Destroy
|
||
|
|
//@cmember Undo
|
||
|
|
virtual HRESULT Undo(CTxtEdit *ped, IUndoBuilder *publdr);
|
||
|
|
virtual HRESULT MergeData( DWORD dwDataType, void *pdata); //@cmember
|
||
|
|
// Merges undo data into the
|
||
|
|
// current context
|
||
|
|
|
||
|
|
private:
|
||
|
|
//@cmember Constructor
|
||
|
|
CSelectionAE(LONG cp, LONG cch, LONG cpNext, LONG cchNext);
|
||
|
|
~CSelectionAE(); //@cmember Destructor
|
||
|
|
|
||
|
|
LONG _cp; //@cmember Active end
|
||
|
|
LONG _cch; //@cmember Signed extension
|
||
|
|
LONG _cpNext; //@cmember Next active end
|
||
|
|
LONG _cchNext; //@cmember Next extension
|
||
|
|
|
||
|
|
friend class CAntiEventDispenser;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CAntiEventDispenser
|
||
|
|
*
|
||
|
|
* @class
|
||
|
|
* creates anti events and caches them intelligently to provide
|
||
|
|
* for efficient multi-level undo
|
||
|
|
*/
|
||
|
|
class CAntiEventDispenser
|
||
|
|
{
|
||
|
|
//@access Public methods
|
||
|
|
public:
|
||
|
|
// no memory mgmt routines; the dispenser is global
|
||
|
|
|
||
|
|
//@cmember text antievent
|
||
|
|
IAntiEvent * CreateReplaceRangeAE( CTxtEdit *ped, LONG cpMin,
|
||
|
|
LONG cpMax, LONG cchDel, TCHAR *pchDel,
|
||
|
|
IAntiEvent *paeCF, IAntiEvent *paePF );
|
||
|
|
//@cmember formatting AE
|
||
|
|
IAntiEvent * CreateReplaceFormattingAE( CTxtEdit *ped,
|
||
|
|
LONG cp, CFormatRunPtr &rp, LONG cch,
|
||
|
|
IFormatCache *pf, BOOL fPara );
|
||
|
|
//@cmember Object AE
|
||
|
|
IAntiEvent * CreateReplaceObjectAE(CTxtEdit *ped, COleObject *pobj);
|
||
|
|
//@cmember Object AE
|
||
|
|
IAntiEvent * CreateResizeObjectAE(CTxtEdit *ped, COleObject *pobj, SIZEUV size);
|
||
|
|
//@cmember Selection AE
|
||
|
|
IAntiEvent * CreateSelectionAE(CTxtEdit *ped, LONG cp, LONG cch,
|
||
|
|
LONG cpNext, LONG cchNext);
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
// FUTURE (alexgo): we'll want to maintain an allocation cache of
|
||
|
|
// anti-events
|
||
|
|
};
|
||
|
|
|
||
|
|
// NB!! Global variable.
|
||
|
|
|
||
|
|
extern class CAntiEventDispenser gAEDispenser;
|
||
|
|
|
||
|
|
#endif // !__ANTIEVNT_H__
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|